It s thrue but i already realise that.
My salt level was 4300 because my old cell read 3000 and decrease ad 1500. So, i out more salt until i realise the problem.
So, my real salt is 4300.
When i tried t9, it read 5900
Then my t15 read "hi"
I did back wash a lot of time.
It seam that the machine...